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Japanese spider crab moulting

This video was posted a few days ago by SeaWorld San Diego. It shows a Giant Japanese Spider Crab moulting, a procedure that takes up to six hours.



The Japanese spider crab (タカアシガニ taka-ashi-gani, "long-legged crab") has the largest leg span of any arthropod, with some specimen reaching 3.8 metres across their outstretched legs. In order to reach such a size, the crabs need to moult frequently. They are native to the waters around Japan.

More info: Japanese Spider Crab

Below another video of a spider crab moulting, this time at the Enoshima Aquarium:



Photos:

giant-spider-crab.jpg

A smaller specimen we saw at the Kaiyukan in Osaka.

giant-crab02a.jpg
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thomas
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